Disk drive initializing a coil temperature estimation...

Details Disk drive initializing a coil temperature estimation... Disk drive initializing a coil temperature estimation...

2007-09-19

2010-02-09

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C318S471000, C388S934000

Reexamination Certificate

active

07660067

ABSTRACT:
A disk drive is disclosed including a disk, a head coupled to a distal end of an actuator arm, and a voice coil motor (VCM) operable to rotate the actuator arm about a pivot to actuate the head radially over the disk, wherein the VCM comprises a coil. Control circuitry within the disk drive measures a load resistance of the coil prior to executing a load operation, wherein the load operation moves the actuator arm off a ramp to load the head onto the disk. The load resistance of the coil is then converted into an initial coil temperature estimate.

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